Triple tier rack



FIG. 1 is a perspective view of a triple tier rack showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the figures represent portions of the triple tier rack that form no part of the claimed design. 

CLAIM The ornamental design for a triple tier rack, as shown and described. 